01Free
Base64 Encode/Decode
Encode text to Base64 or decode it back — free, online. Full Unicode (emoji, Cyrillic, CJK) and URL-safe support. Runs in your browser; nothing is uploaded.
browser tools · no upload3 tools
Data tools
Free browser-based data and text tools — Base64 encode and decode, with JSON and CSV tools on the way. Everything runs in your browser, no upload and no registration required.
- 02Free
JSON Formatter
Free online JSON formatter & validator. Beautify, minify, prettify and lint JSON, jump to the exact error line. Runs in your browser — your JSON is never uploaded.
- 03Free
CSV ⇄ JSON
Free online CSV to JSON and JSON to CSV converter. Quoted fields, custom delimiters and headers handled. Runs in your browser; your data is never uploaded.